<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" th:href="@{/css/a.css}">
</head>

<body>
<h1> login page </h1>

    <h2 th:text="*{username}">默认值</h2>

    <!--<h2 th:text="*{user.id}">默认值</h2>-->

    <div th:include="/default/temp::t"></div>
</body>
</html>